Rotary drive for vacuum cleaners



Illll 1 I llllllllll'" A A SERVA ROTARY DRIVE FOR VACUUM CLEANERSOriginal Filed Sept. 23, 1922 nunuiillmnnm V x 1 w W m. OW 1 1 Dec. 211926.

%M WM 3 611301160414 Patented Dec. 21, 1926.

I UNITED STATES PATENT OFFICE.

ADAM A. sERvA, or oAlv'rorr, OHIO, ASSIGNOR TO THE UNITED ELECTRICcoMrANY,

or CANTON, OHIO, A CORPORATION or OHIO.

ROTARY DRIVE FOR. VACUU M CLEANERS.

Original application 'filed September 23, 1922. Serial No. 590 113.Divided and this application filed November 3, 1923.

This invention relates to rotary brushes for use upon vacuum cleaners orslmilar .devices and the obje ts of th im rovenent are to provide as'mple and efiicient means for rotatablv mounting the h"u.sn in theeasing of the cleaner and pr-ovidin for rotating the brush from atraction w eel of the cleaner.

The above and other objects may be at tained by constructing the deviceas illustrated in the accompanying wl1ich Figure 1 is a bottom plan Viewof the nozzle and brush of a vacuum cleaner, parts bezn shown insectionand Fig. 2, an enlarged seitional view of the bearing and drivingmeans to which the invention pertains.

Similar numerals refer to similar parts throughout the drawing.

For the purpose of illustrating the application of the improvement to avacuum cleaner, a portion of a vacuum cleaner of any usual type isillustrated and includes the nozzle 1 connected in usual manner to asuction chamber and arranged to be supported upon the floor by thewheels 2.

The rotary brush 3 is of nsual construction and is mounted for rotationwithin the nozzle 1. one end of the brrsh shaft which is preferablyhollow, being inserted over the sprinrr pressed plunger 4 in the adjacut end of the nozzle, p oviding a journal bearing forthis end of thebrush, theother end of the brush shaft having a transverse pin 5 whichengages the transverse slot 6 in the pulley shaft 7, the pulley 8 beingfixed or formed integral upon said shaft and condr'awing, in

auism for the an inlet Serial No. 672,626.

nected as by the belt 9 with the adjacent traction wheel 2 which isgrooved as at 1.0 to receive the belt.

A brass brushing 11 is mounted in the inner wall 12 of the nozz e andforms one bearing for the pulley shaft 7, a screw cap 13 being insertedinto the outer wall 14 of the casing and provided with a brass bushing15 which serves as the outer bearing for the shaft.

lVith this construction of -driving mechbrush, it is possible to formthe pulley of relatively small diameter to cooperate with the groovedtraction wheel, in order to rotate the brush at a substantial y highspeed. s

v forming the pulley shaftas. above desribed, the same may be quicklyand easily disconnected from the brush, in. order to allow'the brush tobe removed for cleaning, and the shaft may be easily and readilyreplaced in the cleaner brush.

This application is a division of my copending application Serial No.590,113 filed September 23, 1922.

I. claim In a vacuum cleaner, the combination of nozzle, a bearing inone end thereof, a traction wheel at said end, a casing therefor, ascrew cap in the outer wall of said casing having a bearing therein in70 alignment with the first bearing, a short shaft j ournaled in saidbearings and having a pulley geared to said traction wheel and a brushdetachably connected to said shaft.

ADAM A. SERVA.

and connected to the

